Checking in changes prior to tagging of version 0.28.

Changelog diff is:

diff --git a/Changes b/Changes
index e4bf744..dd71a9e 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for Perl extension Kossy

+0.28    Thu Nov 28 10:29:51 2013
+        - Kossy::Request->new_response returns Kossy::Response
+
 0.27    Tue Nov 12 14:45:09 2013
         - fix packaging issue